The three kinds of crime-scene fingerprints are visible prints, ...

[yoooooman]

The three kinds of crime-scene fingerprints are visible prints, latent prints, and _____ prints.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

Identify and explain the three requirements needed to make a causal inference from an experiment?
 
  What will be an ideal response?

[frejo]

Answer to Question 1

Answer: plastic

Answer to Question 2

Students should identify and explain:
1) Causal Inference - to make a causal inference form an experiment, we must meet the same requirements that are needed for any causal relationship:
(i) Cause must precede effect
(ii) There must be an association between cause and effect
(iii) The researcher must eliminate plausible alternatives.

[yoooooman]

Wow, this really help

[ghepp]

Thanks for the timely response, appreciate it